Method for preparing peroxy acetic acid

A technology for the production of peroxyacetic acid, which is applied to the preparation of peroxygen compounds, chemical instruments and methods, and the preparation of organic compounds. It can solve the problems of hydrogen peroxide, such as easy explosion, low product content, and large production safety hazards, and achieve high utilization rates. High, good production safety effect

Inactive Publication Date: 2006-07-19
周新基
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The product content is low, the utilization rate of acetic acid is low, and 50% and 70% high-concentration hydrogen peroxide is easy to explode, which poses a great production safety hazard

Method used

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Embodiment Construction

[0009] A kind of production method of peroxyacetic acid, comprises the following steps: first acetic acid and the hydrogen peroxide of 27% concentration are mixed in molar ratio 1: 1, and add 2~5% ( The catalyzer of example 2%, 3%, 5%) reacts, and catalyzer adopts the benzenesulfonic acid (or the sulfuric acid of 98% concentration) of 3% concentration, and temperature of reaction is 25~35 ℃ (example 25 ℃, 30 ℃, 35 ℃ ), the time is 1 to 3 hours (eg, 1 hour, 2 hours, 3 hours), and then vacuum extraction, the first extraction is the water phase, and then the peracetic acid component is collected. In the product obtained, peracetic acid accounts for 50%, acetic acid accounts for 11%, and water accounts for 39%. The catalyst is applied mechanically in the reactor.

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Abstract

The disclosed preparation method for peracetic acid (PAA) comprises: mixing the acetic acid and 27% H2O2 by mole ratio as 1:1, adding 2-5% catalyst of 3% benzene sulfonic acid or 98% H2SO4 for reaction; discharging water phase, and collecting the product. This invention has purification more than 50% for different application, improves material utilization, and can adjust tower efficiency to control product content.

Description

Technical field: [0001] The present invention relates to a kind of preparation method of peroxyacetic acid. Background technique: [0002] The traditional peracetic acid production process is to mix acetic acid and hydrogen peroxide with a concentration of 50% or 70% in a molar ratio of 1:0.44, add 5% sulfuric acid as a catalyst, and react at room temperature for 20 hours. The resulting product contains peroxygen. About 21% acetic acid, 5% sulfuric acid, 47% acetic acid, 6% hydrogen peroxide, and 21% water. The product content is low, the utilization rate of acetic acid is low, and 50%, 70% high-concentration hydrogen peroxide is easy to explode, and the production safety hazard is great. Invention content: [0003] The purpose of the present invention is to provide a high content of peracetic acid in a product, a high utilization rate of raw material acetic acid, and a production method of peracetic acid with good production safety. [0004] Technical solution of the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C407/00C07C409/26
Inventor 郑晓兵周新基朱建军徐志全叶子源
Owner 周新基
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